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Pinilico Drive Turnout rrncl Pipeline Project Enviro~tnre~tlal Checklist all times, except for brief street closures for installation of pipeline facilities across the street. At the end of the work day open trenches will be covered with steel plates. "The level of service (LOS) along Pimlico and Brockton drives in residential areas is C and along Pimlico Drive in the commercial section of the pipeline alignment the LOS is C (City of Pleasanton, Urowth Management Plan 2002). The Pimlico Drive/Santa Rita Road intersection is located just south of the eastbormd Interstate 580 on ramp and is subject to congestion and high traffic volumes in the morning and evening peak commuter periods. The LOS at the intersection in the morning is D and in the evening is E (personal communication Mr. Michael Tassano City of Pleasanton Senior Transportation Engineer, April 11, 2006). Installation of the tie-in of the water transmission pipeline with the existing 27-inch water transmission pipeline near the intersection of Pimlico Drive and Santa Rita Road will require closure of up to two lanes of the four-lane, west bound Pimlico Drive at the tie-in location during the day over a period of one to two weeks during construction activity. All open trenches will be covered at the end of the day. One west bound lane of Santa Rita Road may be temporarily closed during the day during installation of the pipeline connections at the Santa Rita control valve vault site. Steel plates will be placed over open trenches at the end of the work day. "Traftc exiting Interstate Freeway 580 onto Santa Rita Road in the east direction during the day may need to merge into the inside lane of Santa Rita Road. Parking occurs along Pimlico Drive in both the residential and commercial sections of the road. [^ addition, there are entrances and exits to commercial businesses on either side of Pimlico Drive, including one entrance/exit to a commercial business near the location of the proposed tic-in. Pipeline construction in this area of Pimlico Drive may require up to two lanes to be closed for short periods of time during constnuction until the pipeline is installed and roadway surface restored. Up to two lane closures may be needed at the site of the proposed tic-in near the intersection of Pimlico Drive and Santa Rita Road. Lane closures in this area during peak morning and evening commute hours will decrease traffic flow and the level of service at this intersection. Although the traffic hazard associated with the project is limited by its small extent and brief duration, due to the current poor level of service at the intersection of Pimlico Drive and Santa Rita Road during commute periods, Project Measure TRANS-1: "Traffic Control Plan has been incorporated as part of the Project. The Measure requires the Contractor to prepare a forma] traffic control plan that would be implemented to keep impacts on traffic flow, parking, and pedestrian bicycle safety to a practical minimum. This impact is considered less than significant. c, g) No impact. The project will not affect air traffic patterns nor adopted policies, plans, or programs supporting alternative transportation. Therefore, this would be no impact. City of Pleasanton 47 Winzler & Kelly Draft Initial Study/Proposed Ncgahve Declaration August 2006 04263501